Piston



June 16, 1931. QQKRAUSE 1,810,279

PISTON Filed March 20, 1950 Patented June 16,1931

UNITED stares CLARENCE C. KRAUSE,OF1GH.ATTANOOGA, TENNESSEE.

rrs'ron Application filed March 20,1930, Serial No. 437,413.

the cylinder and aid in the maintenance of,

compression, as well as preventing piston slap.

It is a still further object of this invention 7 to provide a piston having a portion constituting an anchorage to which the skirt may be attached at locations or points longitudinally of the piston so that a strong and durable structure will result.

With the foregoing and other objects in view, the invention consists inthe details of construction, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.v

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this application, wherein like characters denote correspond ing parts in the several views, and in which Figure 1 illustrates a sectional view of a piston embodying the invention;

Figure 2 illustrates a perspective view of,

the skirt;

Figure 3 illustrates a sectional view of the piston on the line 33 of Fig. 1, omitting the wrist pin and its bearing;

Figure 4: illustrates a front view of the skirt; and

Figure 5 illustrates an enlarged sectional view of a fragment of the piston.

In these drawings 5 denotes a piston having conventional types of ring grooves and rings, generally identified by the numeral 6,

and a conventional form of wrist pin bearing 7. A conventional form of connecting rod 8 and crank shaft 9 is illustrated in dotted lines to more fully illustrate the manner of employing the invention;

The-piston has a depending flange or lug 10 at one side and preferably in the side at A T? OFFICE T right angles to the wrist pin bearing. There is preferably an annular shoulder 11 at the unction of the head of the pistonand the lug 1O and'this shoulder constitutes a seat against which the upper edge of the skirt l2 abuts 1n order that it will relieve the strain on the fastenings 13 by which the skirt is secured to the lug. The shoulder 11 forms the 7 upper wall of a channel 10 and in'creating the channel'a lower shoulder 10 and curved rib 1O are formed. The skirt has ring-like portionslO which are seatedin the channel when the skirt is compressed, as will presently appear. Preferablythe skirt is cut away at the side opposite that to which it is anchored to the lug so that there is an intervening space 14: between the edges 15 and 16 of the skirt. The skirt is of a diameter slightly greater than that of the piston and it is of resilient material so that it may be compressed to fit within the cylinder which will receive the piston and its rings.

Preferably, as stated, the point of anchorage of the skirt to the lug is opposite the slot in the space between the edges15 and 16, although this relation of parts may be changed within predetermined bounds and within the scope of the claims, without departing from the invention.

It is the purpose of the, inventor that the slotted portion of the skirt shall be placed on the piston so that when thepiston isapplied to the cylinder, it will engage the wall of the cylinder, and the anchorage for the skirt is positioned substantially opposite that of the direction of rotation of the crank shaft 1 when the said crank shaft is rotating in a clockwise direction, and,'as a matter of fact,

the flexible skirt may be fastened on the pislongitudinally extending anchorage, a skirt fastened thereto at its side, that portion of the skirt substantially oppositethe side of the anchorage having free edges in spaced relation to each other and adapted to engage a cylinder wall.

2. In an anti-slap piston, a piston having 5 a wrist gin bearing, a longitudinall extendlng anc orage substantially at rig t angles to the axis of the bearing, a skirt fastened to the side of said anchorage, that portion of the skirt substantially opposite the side of the anchorage having free edges in spaced relation to each other and adapted to engage a cylinder Wall.

3. In an anti-slap piston, a piston having a Wrist pin bearing, a longitudinally extending anchorage substantially at right angles to the axis of the bearing, a skirt fastened to said anchorage, the said piston being assembled in operative relation to a cylinder and a connecting rod and a crank shaft where by the anchorage of the skirt to the piston structure is positioned substantially opposite that of the direction of rotation of the crank shaft When the said crank shaft is rotating in a clockwise direction.

CLARENCE C. KRAUSE. 

